A scenario involving carburetor icing would most likely cause which outcome?

• A. Loss of engine power.
• B. Increased fuel efficiency.
• C. Smooth engine operation.
• D. Improved takeoff performance.

Answer: (A)

Carburetor icing restricts the airflow into the engine. When ice forms in the venturi and around the throttle plate, the engine can’t draw as much air as it needs, so the fuel-air mixture becomes improperly balanced and the engine loses power. This is why a loss of engine power is the most likely outcome in a scenario involving carburetor icing. The condition also tends to cause rough running and hesitation as the mixture becomes uneven, rather than smooth operation or better performance. It does not improve fuel efficiency or takeoff performance. The typical remedy is to apply carburetor heat to warm the air and melt the ice, then recheck power once airflow is restored.